package io.work;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.charset.StandardCharsets;

public class test6 {
    public static void main(String[] args) throws IOException {
        File file=new File("fos.txt");
        FileOutputStream fos=new FileOutputStream(file,true);
        String line="a";
        byte[] data=line.getBytes(StandardCharsets.UTF_8);
        fos.write(data);
        System.out.println("写出完毕");
        fos.close();
    }
}
